Q: What are the prime factors of the number 392,870?

 A: 2, 5, 17, 2311

Why are those the prime factors of the number 392,870?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 392,870

392,870
Factor Arrows
2196,435
Factor Arrows
539,287
Factor Arrows
172,311

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 5, 17, 2311

We can check our work by multiplying all of the prime factors together: 2 x 5 x 17 x 2,311 = 392,870

This can also be written as 21 x 51 x 171 x 2,3111 = 392,870

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


More Examples

Here are some more numbers to try:

Try the factor calculator

Explore more about the number 392,870:


Ask a Question